Gaseous-fuel heater



Patented july 27, 1926. f

UNITED eAsEoUs-FEL HEATER' Application filed JnIy 28,1924.' Serial. No. 728,525.,

' The invention relates to'gaseous fuel heaters.` i

One object ofthe invention is to` providel an improved construction of perforated burner-member which 1s formed so that `it ywill not-readily burn out.` Another object of the yinvention is lto provide' an improved construction inwhichV the generator-pipe is separately formed fromthe casingso as tol hereof.

In the drawingsiFig. is a plan of a stove embodying the invention. Fig. 2 is a side elevation, parts being shown in section.

Fig. 3 isy a section on line 3 3 of Fig. 2.

Fig. 4 is a perspective of the burner-ring.

v The invention is exempliiied'in fa stove comprising a reservoir, which, serves, as a base and is adapted' to rcontain, the liquid fuel. under pressure, aswell understood in the art, aneedle-valve v7, suitablyl connectedy -to the top'iof-the reservoir yand for. controlling the delivery of thefuel 'from the reservoir, and a casing` or body 8 which is'secured vto a v pipe-section 9,. whichy extends; upwardly` from the outlet sideof theV body of valve 7. This casingcom'prises a downwardly extending portionglOwhich is screw-threaded to pipe 9, a laterally extendingintegral lug 11, in which is formed a port 12in communication ywith the' pipe 9 and a laterally extending-Yintegral ylug 13.v A vaporizing v pipe 14'is vseparately formed from the cas- 1ng,`,extends through lug13 and is screw,-

Athreaded at 15 into the lug 11, This pipe 14: is disposedv at one sidejof the lstandardportion 8L of casing 8. A fitting '16 Vis screw-threaded at 17 to 'the front end of generator-pipe 14. This fitting 16 conducts thevapor from pipe 14 laterally and is provided at `one end with a jet orl nozzle 18 to discharge ythe vapor intotheinlet duct 19, which is formed in a forwardly extending integral, hollow member 8b of the casingl 8.

A bushing 2'0'is threaded into the front end of member 8b' and is secured therein byv a screw' 21. Nozzle 18 is separately formed from fitting 16being screw-threaded therev e several novel.y features hereinafter set forth and more particularlydeiined by claims at the conclusion `which divide the kvapor into jets its, up-

Y:ralentir w. nosnuennmon cutaneo; 'Irpino-1s.

to, as at 22. vThe tting, 16I is providediwith y i a screw 23 which, when removed, permits ya cleaning tool to be inserted into the fitting.

Lug 13 extends laterally from-,the front portion of the membery 811,013 the casing 8, sol

i that the separately lformed generator-pipel/l y. will be heated b vconductionv-from the case ing. By forming the `'generator-pipe.sep-

arately fromthe casing and securing it in lugs 13 and 11, it has been found in'lpractice that the pipe will be suiiicientlyl heated `to vvaporizey the fuel and-will' not be heated to ,such a degree that carbon will formtherein.'

Thus, the generator-pipe vwill heated suilicientlyfor elficient vaporization ande-avoid i has been found to be an importantfeature in the use of stoves of this type. n The upper end of'thecasing Sis extended outwardly, as at 8", to form ythe base ofa burner and is flared upwardly vand outwardly, as at 8.` The duct 19 extends upwardly,

A central annularv upstanding flange` 8f 'is v formedy onr and ,integrall withi 'the'.fbase 8'.

An annular upstanding ila-ngeVSis also carbonizationoffthe fuel yin the pipe. This vas at 24, todscharge the vaponupwardly.

formedin said` base to baffle" thevap'or from the conca'vo-convexy top-.plate25 ofthe burner towards the burner-ring26. Tliesideior i margin of theburner is formed by this perforated ring '26, which isfornjied ofthin or f sheet metal and clamped between atopf25 and base 8cby a. screw2v7j.. Theloweimargin of this ring` lprovided'withy slits2b1a per porton 26b is convex in cross-section ,and extends upwardlyand inwardly from its lower slitted mar in.; In',pr'actice,5it ..has fbeen found'that w en a verticalI perforated burner-ring is used, theheat frornfthefjets passesupwardly and burns awaythe upper portion of-this ring. Bv the formationfdescribed, thefjetsare directed outwardly away from the upper portion of the ring, so that it will not burn out. In this manner,

vthe* life `of the burner-ring is greatly pro--y longed.A

A grid 31. A cup V32, containing asbestos 33, is

l30, for supporting a vessel, is se? cured on thev top of the casing 8'by screws .screw-threadedto the lower end of thecasing 8'. and serves as a pre-heater for. starty i ing the burner. A duct 19a extends transversely through the underside of member 8b and is ldisposed over thecup 32. This ductcommunicates with the duct 19 and permits the fuel which condenses in duct 19 to drain into the cup 32, as well understood in the art.

It is sometimes desirable to use the stove as a blow-torch. When the ring 26 and topplate 25 and the grid 30, if desired., are removed, the flange 8f will deliver the vapor in a stream of the proper form for use as a rblow-torch.

The Yoperation of the improved heater is as follows: Fuel from the valve 7 will pass through the duct 12, formed in the standard 8a, and lug 11, which are integral with the casing 8. The vaporizing-pipe 14 is usually formed of comparatively thin metal,

so vthat it can be quickly heated, while the4 casing is formed of cast metal, which will heat more slowly, but will retain the heat for a longer period. The vapor will pass from pipe 14 through tting 16 and be discharged through nozzle 16 into the inlet 19; thence it will b e directed upwardly against .the imperforate top-plate 25 of the burner and thereby deflected outwardly and downwardly to the loutside of the baille Se, where it `will be divided by the slitted ring-member 26 to form readily inflammable jets, The heat from the lower portion of the jets will heat` the rim 8d, which will be conducted through the casing, so that thestandard 8 ythereof and lug 11 will be heated sul'liciently to heat the pipe 14 to vaporize the fuel from vtapered perforated burner-ring increases the vlife of the burner, so that frequent replacement thereof will not be necessary. The

stove may also be used as a blow-torch, when the top-plate and burner-ring are removed.

The invention is not to be understood as .restricted to the details set forth, since these may be modified within the scope of the appended claims, without departing from the spirit and scope of the invention.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a gaseous fuel-heater, the combination of'a ycasing provided with a duct, means for controllably supplying fuel to said duct, a generator pipeseparately formed from the casing and having one of its ends connected to receive fuel from the duct, the central portion of said pipe being spaced from the casing, a lug on the casing ander4 tending laterally therefrom. the Central portion of said pipe 'extending transversely through the lug and being adapted to be heated thereby, a iet for delivering vaporized fuel from said pipe to the casing, and a burner on the top of the casing whereby the latter will be heated.

2. In a gaseous fuel-heater, the combination of a casing provided with a duct, means for controllably supplying fuel to said duct, a generator pipe separately formed from the casing and having one of its ends connected to receive fuel from the duct, the central portion of said pipe being spaced from said casing, a lug formed integrally with the casing and extending laterally therefrom, said central portion of the pipe extending transversely through the lug and being adapted to be heated thereby, a jet for delivering vaporized fuel from said .pipe to the casing, and a burner on topA of the casing whereby the latter will be heated.

'3. In a gaseous fuel-heater, the combination of a casing provided with a duct, means for controllably supplying fuel to said duct, a generator pipe heatedby said casing and having one` of its ends secured to receive fuel from the duct, a jet vfor delivering varporized fuel from the pipe into the casing, and a burner on top of the casing and comprising a central imperforateto-p plate `and a ring, said ring having an imperforate inwardly and upwardly extending tapered portion and a depending marginal flange, said flange having vertical slots extending to the junction of the flange and the tapered portion.

Signed at Chicago, Illinois, this 17th day of July, 1924. v

FRANK WV. ROSENGREN. 

